function xdeltaNSslopeFn = deltaNSslopeFn(x)
xdeltaNSslopeFn = (1250*((-1041*x(1))/1250 - (1041*x(2))/1250 - (1041*x(3))/1250 +  ...
   (1041*x(4))/1250 + (1903*x(5))/5000))/1041 ...
;